number one is the lowest i use that on floors no. 4 is the highest i use that on the barbecue grill, i mean use setting #2. you could spend money on just the cleaner for stainless steel but do not do you should use the power of steam. we turkey for thanksgiving and you will probably be cooking for christmas let steam do the work so you do not have to. this all burned on end date gone. if you have not clean job of and in 10 years you will to do with the old- fashioned way first. like to stay on top of it that makes it easy.that are no chemicals. you will not have to open the windows like you will with oven cleaner. you will not need gloves because this is just water. let steam left out there and let the microfiber locked it in. there isoof on the pad. that is power of steam. >>host: this is in my opinion one of the best present you can give to your mother or father. if you are a mother cannot scrub on her hands and knees anymore get heard the h2o mop steamer. has in an intolerance to cleaners. if use bleach next to me my skin gets red and i eyes turned red and my nose that's to run. t